Safety-envelop.



PAIIINTIID MAY I2,l 1908.

W. F. OLIVER. SAFETY BNVELOP. APPLICATION FILED Nov. '1, 190e.

3 vwcnto'n otnut CTI WILLIAM l?. OliiVllv OF l il?! A il. .iin

SAFETY-ENVELOP.

Specification of Letters Potent.

Patented May 12, 1908.

Application filed November i906. Serial No. 852,403.

'wire/m it' may; concern.' s it lmown that l, Winnie il. 'irfjes, s en oi the lilnited States oi America, residinfjr :it Hartford, in the county o'l Fortiiord sind Stilte oi Connecticut, have invented nevi' and nse'ifnl lnrprovcinciits in Safety-llinvelops, oi which the i'ollo\viir is o specificstion.

This invention relstes to safety envelops, and the principal object ot the saine is to provide en envelop which cannot bc o encd excepting by cutting,f or tearing the en( or otherwise destroying,` the, seal` Another object oi my invention is to provide :in envelop with e smell, light sheet nietol jlestencr which, when locked, cannot be unlocked to open the ilap oi' the envelop and hence, renders the envelop sai@ and sc core against surreptitious opennig.

These' and other objects may be attained ,by ineens of the construction illustrated in the accompanying drawings, in o" `ch;

Figure 1 is s reer elevation oit' en envelop rnsde in accordance with my invention and having the :ilep open. Fie. 2 is s. plan view of one inember ot the meti lic seal before the points or prongs are bent downward to sc cure the saine to the 'lnp oi the envelop. Fig. 3 is s. similar view ol' the other member of the envelop seid. Fig. is e sectional 'view teken through the ermelo;i with the ilep secured in place by the metal eef. Fig. 5 is en enlarged sectional view trillen through both nieinbers et 'the motel see-,l with the cnvelop showin broken sway.

Referring to the drawings for e. more mrticuler description oi? roy invention, the nue incre-l 1 designates the upper liep of en en volop, end is the .lower flap oi the sinne. The beck portion of the envelop comprises the two overlapping portions 3, e, which are preferably :termed integral with the body portion oi the envelop. The portions 3, 4 extend to the bese line of the riep 1 sndoverlop each other, as shown by the dotted lines in Fig. l. The metal seal or lock cimsist's of s. mele member, shown in plan in Fig. 2, comprising e light sheet inetal device having integral prongs 5 cxtendinv outward from e kcentral portion 6 and formed upon said central portion 6 is ahead or bell 7 provided with an annular groove `or recess 8 surrounding the stern 9. The prongs 5 are passed through the flap 1 of the envelop, and the ball member 7 is also vpassed throuwli the flop, ss shown in Fig. 1, the prongs 5 sing bent down to hold i i i i i i i the device .in pince. The female member olt the fastening consists oi e disl: oi' thin sheet incisi provided with scouring prongs l?, 1nd i central soerturc l0 comprising slots li i which extend from the aperture 103, thus providing spring lips 12, .vhich :ire extended inwardly, :is sliovvn in Figs. i and 5, seid lips engaging; the annuler recess S under the heed. of the stud meinbcr 7. lt is to be noted that the disk portion oi: tio iernele. member is curved. is shown The I Y 1 prongs 1G are passed through the lower iis and through the two portions 3 :ind 4., serio Tirongfs beine` bent down inside thc envelop to nold the nieniber in place.

The operation o'l my invention may be brieily described :1s follows: Vhen it is desired to seal the envelop, thc ball member 7 is pressed into the aperture l0"L until the lips 12 engage the annular recess 8 behind the heed of the stud member. ln this position the seal cannot be reopened without destroying the om elop because any prying sction on the port of the boli member reizt-- tively to the socket member will only in crease the holding power or' the lips Within the annuler recess As o further security the edge of the liep 1 nifty be guinined down to the front of the envelop, es shown :it 14;. The curvature oi the disk portion of the fcrosieinonibcr provides snl'licient splice be tween the inner well of said curved portion und the envelop body to accommodate the hood 7 o1c the stud ineinbor.

lironi the foregoing it will be obvious that on envelop inode in accordance with iny invention, :ind provided with the light, metallic Seel described, cannot be surreptitionsly opened, :rnd when once sealed, the contents oi 'the envelop cannot be inspected excep 'ing by the (.lestruction oi' thc seul or by opening the envelop in the usuel wey. A

Having 'thus described the invention., what l cleim is:

1. A metallic soul i'or on envelop comprising o stud incinber and n` socket n1en1ber,the former .having prongs extending outward from o centrsl portion, s stud on the central portion having o heed which is provided in :its under side with an annuler recess, o. socket rnenibcr comprising concave-convex disk having s. central aperture for passage of seid stud, the concsvity of said disk providing sul'licient space between the inner well there of and the envelop to accommodate the head of the stud for firmly sealing the envelop and @effing ih@ convgifle of the head, for: Secufng the @ame @Ning its convezihsde outwadly hres-*ved zm its sommo side msngthe body :mdhomng an ntefvemng rei caw-ing Space, Sad memnef bain@ pro'vded with prongs seeming it o the bsdy and having a central imperium and series of '591mg Lngers mdaly aanged thefeto DentnWa/ll'j into said eevng space, and mas. membe upon the ssang pmvfleiz wiongs smng it 'heeo amd cmying stud to said female membef on the i said stud having a hfad ulaI ted t0 be thmugh the. opening in me mae agals. *die Iess'iiance'o said spring nges and omfed in ts underside With a eess adapfad to "feoeva the fingers, 'Whefeby an nieoczng actix e'en the rWo mem- De is seemed, the bead when so ap Hed lying l Vthe said eceving eess forme be tweeen 'bh-s body h@ envesp md them-fmcave side of @he 'vmala membe.

En tasmo'ny whereof, l afi* my signfum in pesvence tw@ Witness-es. 

